/*========
  Fall 2025 - CS 111
  Week 13 Lab Exercise - save as lab13.cpp

  date: 2025-11-21
========*/

/*---
    USING pair-programming
    *   COPY and PASTE the contents of this 
        file into a file in the CS50 IDE named:

        lab13.cpp

    *   ADD the parts asked for below *to* this file
        as specified (one student saying what to type,
        the other student typing it into the CS50 IDE)

    *   each time you want to compile:
        in a CS50 terminal that is open to the folder         
        CONTAINING this .cpp file, 
        ("Open in Integrated Terminal"), type:
   
        g++ lab13.cpp -o lab13

    *   IF it compiles with no errors:
        to run: in that same CS50 terminal that is open 
        to the folder CONTAINING this .cpp file, type:

        ./lab13

    *   When you are satisfied with its output, create an
        example output file by typing:

        ./lab13 > lab13-out.txt

    *   Download copies of your resulting lab13.cpp and lab13-out.txt
        by right-clicking on their names in the file explorer on the
        left of the CS50 IDE, and use Gmail to MAIL a copy of these
        files to BOTH of you.

    *   And, EACH of you should SUBMIT these TWO files,

        *** lab13.cpp AND lab13-out.txt ***

        to Canvas BEFORE you leave lab.

    *   REMEMBER to also answer the
        "Week 13 Lab Exercise - Pair-Programming Peer Review Survey"
        in Canvas, posted along with this lab exercise, by
        11:59 pm TONIGHT (Friday, November 21)
---*/

/*---
    by: PUT BOTH of YOUR NAMES HERE 
    last modified: 2025-11-21
---*/

#include <cstdlib>
#include <iostream>
#include <string>
#include <cmath>
using namespace std;

/*--- WEEK 13 LAB EXERCISE - PROBLEM 1 ---*/

/*---
    The purpose of this problem is to make sure that you are familiar
    with the class indentation style for while statements
    (and also when an if statement is contained within a 
    while statement's body).

    LOOK over Week 13's posted example functions 
    cheer, sum_ints, and vertical, showing the required class style for 
    C++ while statements:

    while (bool_expr)
    {
        statement;
        ...
        statement;
    }

    The following function header and body for function count_upper are
    syntactically correct, but their style does NOT follow class
    coding standards!

    So -- MODIFY the function below to FOLLOW the class style!

    (The function count_upper is tested in the main function below, so you 
    can make sure it still works after you fix its style.)

    NOTE!! The instructor will HAPPILY check over your answer IN LAB
    before you submit this and let you know if your version meets
    class style!!! <-- just ask!
---*/

/*===
    signature: count_upper: string -> int
    purpose: expects a message, and returns the number of
        uppercase letters (A .. Z) in that message
    tests:
        count_upper("") == 0
        count_upper("moo baa") == 0
        count_upper("Hello, HOW are YOU?") == 7 
===*/
    
/*--- IMPROVE the FORMATTING of this WORKING function
      to MEET CS 111 CLASS CODING STANDARDS ---*/

int count_upper(string message){int position = 0;
int num_upper = 0;int msg_length = message.length();
char curr_char; while (position < msg_length){curr_char = message.at(position);
if ((curr_char >= 'A') and (curr_char <= 'Z')){num_upper = num_upper + 1;}
position = position + 1;}return num_upper;}



/*--- WEEK 13 LAB EXERCISE - PROBLEM 2 ---*/

/*---
    Purpose: to practice writing a function with a while statement

    Using the design recipe, write a function repeat_str that expects
    a string and the number of times it should be repeated, and it returns
    a string whose contents are the given string repeated that many times.
    It should return an empty string if given a number of times that
    is 0 or negative.

    For example,
    repeat_str("moo ", 3) == "moo moo moo "
    repeat_str("What?", 4) == "What?What?What?What?"
    repeat_str("unreasonable", 0) == ""
    repeat_str("really?!", -3) == ""

    ***NOTE: this function happens to have NO side-effects!***

    For FULL credit:
    *   appropriately use a while loop in this function.
    *   include at least 4 appropriate tests 
        (2 for non-empty strings of different lengths and
            different numbers of repetitions,
         1 for a non-empty string and 0 repetitions,
         1 for a non-empty string and a negative number of repetitions)
---*/

/*---
    signature:

    purpose:

    tests:

---*/








/*--- WEEK 13 LAB EXERCISE - PROBLEM 3 --- */

/*--- 
    Purpose: to practice writing a another function with a while statement,
       and also one that happens to have side-effects in addition
       to returning a value

    Use the design recipe to design and write a C++ function
    starline that:
    *   expects a desired number of asterisks/stars to print 
        to the screen
    *   has the SIDE-EFFECT of printing to the screen that 
        many asterisks on a single line, followed by a newline character
    *   then returns the number of asterisks/stars actually printed
        to the screen

    (So, if the argument is <= 0, no asterisks should be printed,
    just a newline, and it should return 0.)

    for example,
    starline(4) == 4
    ...and also has the side-effect of printing to the screen:
****

    For FULL credit:
    *   appropriately use a while loop in this function.
    *   for its tests, describe its side-effects ALSO
        along with its bool expression (as done for cheer in W13-1 examples
        and for vertical in W13-2 examples)
    *   when you RUN those tests in main,
        *before* your cout containing its bool expression,
        also write a cout describing what side-effect you should see
        for that test.

        (for example, for cheer we said something like:
        cout << "should see 3 HIPs then a HOORAY! then true" << endl;
        cout << (cheer(3) == 3) << endl;
        )
    *   include at least 4 appropriate tests 
        (2 for different positive numbers of stars,
         1 for 0 stars,
         1 for a negative number of stars)
---*/

/*---
    signature:

    purpose:

    tests:

---*/








/*---
   test the functions above
---*/

int main()
{
    cout << boolalpha;

    cout << "*** Testing: count_upper ***" << endl;

    cout << (count_upper("") == 0) << endl;
    cout << (count_upper("moo baa") == 0) << endl;
    cout << (count_upper("Hello, HOW are YOU?") == 7) << endl;

    cout << "*** Testing: repeat_str ***" << endl;

    // copy each of repeat_str's test expressions into a 
    //     cout statement to print its result

    // cout << () << endl; 




    cout << "*** Testing: starline ***" << endl;

    // for EACH starline test,
    // write a cout DESCRIBING what side-effects should be for that
    //     test,
    // THEN copy its test expression into a second cout statement to
    //     print its result

    // cout << "Should see ..., then true:" << endl;
    // cout << () << endl; 




    return EXIT_SUCCESS;
}


/*---
    Remember: once you have compiled and run these and are satisfied
    with them,

    *   DOWNLOAD copies of this file lab13.cpp AND your
        example output file lab13-out.txt, and use Gmail
        to E-MAIL copies of BOTH of these files to
        BOTH of you.

    *   BOTH of you should submit your files 
        *** lab13.cpp AND lab13-out.txt *** 
        to Canvas BEFORE you leave lab.

    *   ALSO answer the
        "Week 13 Lab Exercise - Pair-Programming Peer Review Survey"
        in Canvas, posted along with this lab exercise, by
        11:59 pm TONIGHT (Friday, November 21)
---*/